Cobweb — Minecraft block

Cobweb

Spider-spawned decoration found in mineshafts and strongholds that drastically slows any entity moving through it, useful for traps and mob control.

Block ID minecraft:cobweb
Mod Vanilla
Game versions
1.21

Description

Cobweb is found naturally in abandoned mineshafts, stronghold corridors, and igloo basements. It can be obtained with shears, which give one intact block, or with a Silk Touch sword or tool, which also drops it intact. Without Silk Touch, breaking it with a sword drops string, while other tools destroy it without drops.

Any entity passing through it has its movement speed reduced to roughly 15% of normal, making it highly effective as a trap layer or mob-slowing barrier. Entities do not take fall damage while within it. Arrows shot through it slow to a crawl and may lose flight trajectory.

Players use cobwebs for mob farms to slow enemies before killing mechanisms, in PvP traps, and in adventure-map puzzle design. Decoratively, cobwebs create haunted-house aesthetics and are essential for abandoned-structure builds. String, crafted from this block, is a core ingredient for bows and fishing rods.